The predictive threshold allows you to use data from the past to project a value in the future and send an event if the future projected threshold is breached during a pre-defined time period. Resource Manager uses a linear projection algorithm for all projections. For example, you could predict total raw storage capacity of a disk or the bandwidth utilization percentage. Several predictive thresholds are already defined in the system. You can see all the defined thresholds in the Defined Thresholds report which can be accessed on the REPORTS > Enterprise Reports menu.
Predictive thresholds are also used for creating a trendline on a graph. You can add the threshold to the management of graph points so that a trendline will be added to the graph.